Costillo, David
Current rating: 1482
Record: 2-3
| Grand Prix San Antonio 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 189 | Bruno, David (1551) | Lost 1-2 | -171483 |
| 2standard | 216 | Evans, Chris N (1466) | Lost 0-2 | -181465 |
| 3standard | 328 | Defoor, Buster (1464) | Won 2-0 | +181483 |
| 4standard | 301 | hebert, Jarrod (1465) | Won 2-0 | +171500 |
| 5standard | 189 | Langas, Joseph (1498) | Lost 0-2 | -181482 |
| average opponent: 1489record: 2-3 | new rating: 1482 | |||